No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

These azure waters were thought to lead to the Mayan Underworld.

The ruins of this abandoned fort now stand as a picturesque reminder of America's march West.

A multi-storied adobe complex has been inhabited for more than a thousand years.

Natural sonic phenomenon comes with a grisly legend of murder and blood.

One man has carved a number of natural New Mexico caves into psychedelic sandstone temples.

A unique geological area spiked with wind-carved rocks that resemble teepees.

This museum started as a collection of Manhattan Projects and continues to add exhibits as they are declassified.

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

Despite time, colonization, and the brutal New Mexican heat, these Pueblo ruins still stand.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

The highest point in Texas is capped by a big silver pyramid.

Steep canyon walls hide a forested oasis in the West Texas desert.

The second largest roadrunner in the world stands 11 feet tall in his West Texas town.

A tiny waterway named after a ghost story.

This Canadian monument to the man who invented the telephone allows visitors to get up close and personal with the artifacts of his life.

The city of Halifax still bears the scars of the largest explosion prior to the atomic bomb.

A morbid piece of memorabilia from the most famous shipwreck in current history is just one of the many poignant artifacts in this Canadian museum's collection.

Eastern Canada's ocean playground.

The first "applecore" style lighthouse in Nova Scotia.

This lovely, if imposing, piece of Canadian gothic is possibly the most photographed hotel in the world.

This steep cable railway has been hoisting passengers in the heart of Québec City for over a century.

This 19th century granite fortification is one of the most well preserved forts in New England.

Stone monument honoring a town founder has a witch-boot shaped stain and a curse to go with it.